One-piece collapsible book-type box



Nov. 18, 1969 E. RICHGELS 3,478,949

ONE-PIECE UOLLAPSIBLE BOOK'JFYPH BOX Filed March 18, 1968 2 Sheets-Sheet 1 Fife. 4

50am/15 ,wc/feas E. RICHGELS Nov. 18. 1969 ONE-PIECE COLLAPSIBLE BOOKHTYPF. BOX

2 Sheets-Sham :4

Filed March 18, 1968 INV ENT(.)R. EUGfA/f /P/CAG /EL S .A T TORNEYS United States Patent O'Mice 3,478,949 ONE-PIECE COLLAPSIBLE BOOK-TYPE BOX Eugene Richgels, West St. Paul, Minn., assignor to Kaplan Paper Box Co., St. Paul, Minn., a corporation of Minnesota Filed Mar. 18, 1968, Ser. No. 713,726 Int. Cl. B65d 5 /24 U.S. Cl. 229-31 10 Claims ABSTRACT F THE DISCLOSURE A book-type box having two sections each with a cover and an end and side walls issuing therefrom and each hingedly connected to a backbone. A marginal flange portion of the covers extends outwardly beyond the side and end walls as well as the backbone of the box. An outer hinge structure at the outer corners of each section comprises a triangular tab on each side wall which is glued to a flap on the end Wall and permits collapsing or erecting the sections of the box at the outer corners -while an inner hinge structure at the ends of the backbone consisting of three triangular tabs hingedly connected to the facing ends of the side walls and backbone and to each other permits collapsing or erecting the sections of the at the locality of the backbone.

Summary of the invention Book-type boxes have hitherto been made from several pieces of material but the cost thereof is sometimes prohibitive. It is an object of the invention to provide a preformed assembled book-type box formed of a single piece of material having marginal flange portions and adapted to be collapsed and folded into a flat compact form and to be erected, filled and closed without gluing.

These and other more detailed and specific objects will be disclosed in the course of the following specification, reference being made to the accompanying drawings, in which:

FIG. 1 is a perspective view of a completed box embodying the invention.

FIG. 2 is a plan View of the blank from which the box is constructed.

FIG. 3 is a top plan view of the box in a partially assembled and folded condition.

FIG. 4 is an enlarged detailed View of the upper right corner portion of the box shown in FIG. 3, portions thereof being in section, other portions broken away.

FIG. 5 is an enlarged detailed view of a portion of the upper right corner of the blank shown in FIG. 2 in a partially folded condition.

FIG, 6 is a perspective View of one end of the box included in FIG. 4 with one corner portion thereof in flattened condition and an-other corner portion raised from the flattened condition to an upright operative condition.

FIG. 7 is a perspective view of the completed box in a partially opened condition.

FIG. 8 is a sectional view on the line 8 8 of FIG. 1 a portion thereof being broken away.

FIG. 9 is a sectional view on the line 9-9 of FIG. 8.

Referring to the drawings in detail, the entire box A is formed from a single die cut piece of cardboard 10 which includes lower box section 11. The box section 11 includes the bottom cover portion 11a hingedly connected to the backbone 12 by means of the score line 14. Further provided is the upper box section 16 which includes the top cover portion 16a hingedly connected to the backbone 12 by means of the score line 18. The bottom cover portion 11a is defined further by the first side score line 20, the end score line 22 and the second side score line 24.

The backbone portion 12 is defined by the score lines 3,478,949 Patented Nov. 18, 1969 14 and 18 and the end score lines 28 and 30 which are extensions of score lines 20 and 24, respectively.

The top cover portion 16a is slightly greater in dimension from score line 34 to score line 18 than from score line 22 to score line 14 whereby box section 16 may be closed upon box section 11. Top cover 16a is defined further by the first side score line 32, the end score line 34 and the second side score line 36. Further provided is a rst end flange defining strip 38 formed as part of and extending from the score line 22 to the perforated line 40. The strip 38 terminates at one end in the first miter cut 42 and at the other end in the second miter cut 44. Connected to and as part of the strip 38 is the lower end wall portion 46. The perforated line 40 forms a hinged connection between wall 46 and cover 11a. The lower end wall portion 46 terminates at one end in the first lower end wall ap portion 48 formed by the score line 50 and at the other end terminates in the second lower end wall flap portion 52 formed by score line 53. The flap 48 is notched as at 54 to form the leg portion 56, and the flap 52 is notched as at 58 to form the leg portion 60.

The numeral 62 designates a first side flange defining strip 62 formed as part of `and extending from the score line 20 to the perforated line 64. The strip 62 terminates at the outer end in the miter cut 66 which lies in continuation of the miter cut 42, and terminates at the inner end in first short score line 68, lying in continuation of the score line 14. Connected to and as part of the strip 62 is the first lower side wall portion 70. The perforated line 64 forms a hinged connection between wall 70 and cover 11a. The first lower side wall portion 70 terminates at its inner end in the scored line 72 and at its outer end in the end edge 74 which intersects the upper end of the miter cut 66. Extending from the point of intersection of the miter cut 66 and the inner edge 74 is the score line 76 formed with the perforations 78 which line 76 is angularly disposed relative to the outer edge of wall portion 70 and in alignment with the miter cut 66 to form the triangular tab 80. The area of the triangular tab 80 is coated with an adhesive, The line 76 is the hypotenuse of the tab 80, and the tab 80 is a right angle isosceles triangle.

Extending from the short score line 18 is a first backbone fiange defining strip 82 defined by the score line 28, score line 68, a second short score line 84 and the perforated line 86. The numeral 88 designates a first triangular shaped tab defined by the score line 72, the side edge 90 and the score side edge line 92. The side edge 90 and the side edge 92 are formed by a V-notch 93. A further triangular shaped tab 94 is provided which is defined by the score line 92, the perforated line 86 and the score line 96. The score line 96 forms one side of a still further triangular shaped tab 98 which is further defined by the score line 100 and the side edge 92. The tabs 88, 94 and 98 together with the related parts form a first inner co1- lapsible hinge structure between the backbone and the side walls.

The score line 100 defines the inner end of a first upper side wall portion 102 which is part of and extends from the second side flange defining strip 104. The strip 104 is defined by and extends from the score line 32 to the perforated line 106 and from the second score line 84 at one end to the miter cut edge 108 at the other end iden- Atical to miter cut edge 66. The perforated line 106 forms a hinged connection between wall -102 and cover 16a. An extension of the angular cut edge 108 is formed in the score line 110 formed with the perforations 112 which is angularly disposed relative to the outer edge of wall portion 102 and in alignment with miter cut 108 to form the triangular tab 114 further defined by outer end edge 116 of the side 'wall portion 102. The score line 110 is the hypotenuse of the tab 114 and the tab 114 is a right angle isosceles triangle.

Extending from the score line 34 is a second end flange defining strip 118 which is defined at the outer edge by the perforated line 120. The strip 118 terminates at one end in the first miter cut 122 and at the other end in the second miter cut 124. The miter 122 lies in continuation of the miter cut 108. Connected to and as part of the strip 118 is the upper end wall portion 126. The perforated line 120 forms a hinged connection between wall 126 and cover 16a. The upper wall portion 126 terminates at one end in the first upper end wall flap portion 128 formed by the score line 130 and at the other end terminates in the second upper end wall flap portion 132 formed by score line 133. The flap 128 is notched as at 134 to form the leg portion 136, and the flap 132 is notched as at 138 to form leg portion 140.

The numeral 142 designates a third side flange defining strip formed as part of and extending from the score line 36 to the perforated line 144. The strip 142 terminates at the outer end in the miter cut 145 which is a continuation of the miter cut 124, and terminates at the inner end in a third short score line 146. Connected to and as part of the strip 142 is the second upper side wall portion 148. The perforated line 144 forms a hinged connection between wall 148 and cover 16a. The second upper side wall portion 148 terminates at its inner end in the score line 150 and at its outer end in the end edge 152 which intersects the upper end of the angular cut 145. Extending from the point of intersectio-n of the angular cut 145 and the inner edge 152 is the score line 154 formed with the perforations 156 which line 154 is angularly disposed relative to the outer edge 152 of wall portion 148 and in alignment with the miter cut 124 to form the triangular tab 158. The area of the triangular tab 158 is coated with an adhesive. The line 154 is the hypotenuse of the tab 158, and the tab 158 is an isosceles triangle.

Extending from the short score line 146 is a second backbone flange defining strip 160 defined by the score line 30, score line 146, a second short score line 162 and the perforated line 164. The numeral 166 designates a first triangular shaped tab defined by the score line 150, the side edge 168 and the score side edge line 170. A further triangular shaped tab 172 is provided which is defined by the score line 174, the perforated line 164 and the score side edge line 170. The score line 174 forms one side of a still further triangular shaped tab 176 which is further defined by the score line 178 and the side edge 180. The tabs 176, 160 and 166 together with the related parts form a second inner collapsible hinge structure between the backbone and the side walls. The side edge 168 and the side edge 180 are formed by V-notch 181.

The score line 178 defines the inner end of a second lower side wall portion 182 which is part of and extends from the fourth side flange defining strip 184. The strip 184 is defined by and extends from the score line 24 to the perforated line 186 and from the second short score line 162 at one end to the miter cut edge 188 at the other end identical to the miter cut edge 145. The perforated line 186 forms a hinged connected between wall 182 and cover 11a. An extension of the miter cut edge 188 is found in the score line 190 formed with perforations 192 which line 190 is angularly disposed relative to the outer edge 196 of lower side Wall portion 182 and the miter cut 188 is a continuation of miter 44 to form the triangular tab 194 further defined by outer end edge 196 of the lower side wall portion 182. The line 190 is the hypotenuse of the tab 194, and the tab 194 is a right angle isosceles triangle.

The bottom cover portion 11a has formed on the inner surface thereof and adjacent the score lines 20, 22 and 24 strip areas of adhesive 21, 23 and 25, respectively. Similarly the top cover portion 16a has formed on the inner surface thereof and adjacent the score lines 32, 34 and 36 strip areas of adhesive 33, 35 and 37, respectively.

The box A originates in the flat die cut condition shown in FIG. 2, and inasmuch as each of the corners f the box is assembled in the same manner only the assembly of the upper right corner construction and the related parts of FIG. 2 will be explained in detail. The assembly consists of first folding upon the various related score lines, the first lower side wall portion 70 and the first flange defining strip 62 together with the first upper side wall portion 102, second Side flange defining strip 104, flange defining strip 82 and related triangular portions flat upon the rst Wall portion 11, the backbone portion 12 `and the second wall portion 14. The triangular tab is folded on the score line 50 to a position flat upon the first end Wall 46 (see in particular, FIG. 5). Then the flap 48 together with wall 46 is pressed upon the adhesive coated triangular tab 80 while at the same time the first flange defining strip 38 is pressed upon the adhesive strip `area 23 (see FIG. 3). The box corner just described forms a collapsible hinge structure and is raised to the upright position shonw in FIG. 6. The remaining corner formations and related parts are assembled in like manner. The strips 38, 62, 82, 104, 118, 142, and 184 are folded on the respective perforated lines to positions flat upon the adhesive strips provided to form flange formations (FIGS. 1 and 7) and raised whereby the wall portions are upright and at a right angle to the wall portions 11 and 14 and the backbone 12, somewhat as in FIG. 7.

As the cover portions 11a and 16a are hingedly moved toward each other for closure, the tabs 94 and 172 remain flat upon the backbone 12, and the tab 166 is caused to fold upon score lines and 150. Tab 166 then moves to a position upon tab 172, and tab 176 moves to a position upon tab 166, particularly FIGS. 2 and 6. The tabs 88, 94 and 98 fold in the same manner as the cover portions 11a and 16a are hingedly brought together.

It is understood that suitable modifications may be made in the structure as disclosed.

Having now therefore fully illustrated and described my invention, what I claim to be new and desire to protect by Letters Patent is:

1. A preformed, assembled one-piece collapsible book type box of flexible material comprising:

(a) a backbone,

(b) a lower box section having (c) a bottom cover hingedly connected to the backbone,

(d) lower side walls hingedly connected to the bottom cover, and

(e) a lower end wall hingedly connected to said bottom cover,

(f) a marginal flange portion of the bottom cover projecting outwardly beyond the sides and end wall of the lower section,

(g) an outer collapsible hinge structure at the corners between the side walls and end wall of the lower box section,

(h) an upper box section having (i) a top cover hingedly connected to the backbone,

. (j) upper side walls hingedly connected to the top cover,

(k) an upper end wall hingedly connected to the top cover,

(l) a marginal flange portion of the top cover projecting outwardly beyond the side and end walls of the top section,

(m) an outer collapsible hinge structure at the corners between the side walls and end wall of the upper box section, and

(n) an inner collapsible hinge structure between the backbone and each of the corresponding side walls of the upper and lower box sections,

(o) the walls of said upper box section being adapted to overlie the walls of said lower section when the box is erected and closed.

2. The device of claim 1 in which (a) the marginal flange portion at one outer corner of one of the box sections is formed by (b) flange defining strips folded back upon the marginal portion of the cover of the section and attached throughout their extent to said cover to form marginal flanges,

(c) said strips being mitered at their ends,

(d) the end wall and side wall at ysaid corner extending outwardly from said strips and being hingedly con nected thereto,

(e) one of said walls terminating at the folded end of the strip from which it issues and having (f) a score extending diagonally across the same and starting at the intersection of the end of the fold in the strip and the end of the denoted wall to provide a tab at the outer corner of the wall,

(g) the other wall having a flap issuing therefrom at its end and hingedly connected thereto by u,

(h) a score extending transversely across the end wall and starting at the intersection of the fold in the strip from which said other wall issues and the miter,

(i) said flap being secured to said -tab throughout the area of said tab to form the outer hinge structure.

3. The device of claim 2 in which (a) the tab is triangular in form with (b) one side of the triangle lying in continuation of the outer edge of the wall from which the tab'issues,

(c) the other side of the triangle being at right angles to the rst named side of the triangle and (d) the diagonal score of said wall forming the hypotenuse of the triangle.

4. The device of claim 3 in which the tab is in the form of a right angle triangle having equal sides.

5. The device of claim 4 in which the flap is of a width from the line of fold of the side from which it issues substantially equal to the depth of the box.

6. The device of claim 5 in which the length of the Hap is substantially equal to the width thereof.

are formed in the stock from which the tabs are constructed which form the free sides of the tabs issuing from the side walls of both sections of the box.

10. The device of claim 1 in which (a) the marginal flange portions of the bottom cover are formed by marginal flange defining strips formed as part of the cover being folded back upon marginal portions of the cover and attached throughout their extent to said marginal portions, and (b) the marginal ange portions of the top cover are formed by marginal ange defining strips formed as part of the cover being folded back upon marginal portions of the cover and attached throughout their length to said marginal portions.

References Cited UNITED STATES PATENTS 1,422,540 7/ 1922 Christensen 229-31 X 1,996,975 4/ 1935 Raisin 229-8 2,061,992 11/1936 Wilson 229-8 2,124,036 7/1938 Klein 229-8 X 2,565,288 8/1951 Worfford 229-33 2,914,234 11/1959 Hazelwood 229-31 3,019,958 2/1962 Aspan et al 229-31 DAVIS T. MOORHEAD, Primary Examiner 0 U.S. Cl. X.R. 

